Hello!
Yes, x10 servers are fully compatible with Joomla.
For a Joomla 1.5 version, you may opt for an easier/automated installation by using either
cpanel >> Fantastico or
cpanel >> Softaculous.
For a Joomla 1.6 version, upload and extract this zip file in the public_html directory:
http://joomlacode.org/gf/download/frsrelease/14659/64120/Joomla_1.6.3-Stable-Full_Package.zip
Please make sure that before you begin with the installation of Joomla 1.6, you need to create a database user and a mysql database.
You also need to link them together and grant the required privileges to the database user.
For more information:
http://x10hosting.com/wiki/How_to_Create_a_MySQL_Database_and_User
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servername = localhost
username = cpanelusername_databaseusername
databasename = cpanelusername_database
password = password for cpanelusername_databaseusername
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~MaestroFX1